5.) A block of m1=20.0 kg is placed on a plane inclined at angle α= 37.1°and is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley. The coefficient of kinetic friction between the plane and the block is 0.30.

a) Find the mass m2 if it is to descend 12.0 m in the first 3.00 s after the system is released from rest.

 

b) Find the mass m2 for which the block m1 accelerates down the plane at a rate same as the magnitude in (a).

A block with mass 18.6 kg is placed on an inclined plane with slopeangle 21.1^\circ and is connected to a second hanging block thathas mass 14.8 kg by a cord passing over a small, frictionlesspulley. The coefficient of static friction is 0.47 and thecoefficient of kinetic friction is 0.34.

What is the normal force on m_1?

If the incliuned slope is frictionless, what is the acceleration ofthe 2 masses? Use up the incline as your + x direction.

What is the tension in the cord in this case?

Assume friction is down the incline (we actually need to look atthe sign of acceleration in part a to be sure). If friction is downthe incline and the 2 blocks are not moving, what is the value offriction?

What is the maximum static friction?